A microwave-responsive shape-memory polymer composite material and its preparation method
A technology of memory polymers and composite materials, which is applied in the preparation of shape memory polymer composite materials and the field of shape memory polymer composite materials, can solve problems such as inconvenience, achieve the effect of broadening types and improving thermomechanical properties
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Embodiment 1
[0033] Take 12g of nano-silicon carbide, add it to 120mL of 10% hydrochloric acid aqueous solution, stir for 24h, wash and filter repeatedly until the filtrate is neutral, and dry at a constant temperature of 120°C. Add 10 g of dried silicon carbide powder to 100 mL of toluene, raise the temperature to 50°C and stir for 1 hour, add 0.3 g of KH550 dropwise, stir and react for 2 hours, vacuum filter the product while it is hot, wash with acetone and deionized water successively, centrifuge and store at 105°C Dry in an oven for 12 hours to obtain modified silicon carbide.
[0034] Take 5 g of polyvinyl alcohol with a degree of polymerization of 1700 and a degree of alcoholysis of 99% and add it to 100 mL of water, and dissolve it at 98°C for 6 hours to obtain a 5% aqueous solution of polyvinyl alcohol. After the solution was cooled to room temperature, the pH value of the solution was adjusted to 3 with hydrochloric acid solution.
[0035] Disperse 0.5g of modified silicon carbi...
Embodiment 2
[0038] Take 12g of nano-silicon carbide, add it to 120mL of 8% hydrochloric acid aqueous solution, stir for 24h, wash and filter repeatedly until the filtrate is neutral, and dry at a constant temperature of 120°C. Take 10 g of dried silicon carbide powder, add it to 100 mL of toluene, raise the temperature to 60 ° C and stir for 4 h, add 0.1 g of KH560 dropwise, and stir for 4 h. ℃ oven dry for 12h.
[0039] Take 9g of polyvinyl alcohol with a degree of polymerization of 1700 and a degree of alcoholysis of 88% and add it to 100mL of water, and dissolve it at 98°C for 6 hours to obtain a 9% aqueous solution of polyvinyl alcohol. After the solution was cooled to room temperature, the pH value of the solution was adjusted to 4 with hydrochloric acid solution.
[0040] Disperse 0.3g of modified silicon carbide in 10mL of water, mix it in 100mL of polyvinyl alcohol aqueous solution, add 0.1g of glutaraldehyde and stir for 3 minutes, inject the mixed solution into a hollow straigh...
Embodiment 3
[0043] Take 12g of nano-silicon carbide, add it to 120mL of 5% hydrochloric acid aqueous solution, stir for 24h, wash and filter repeatedly until the filtrate is neutral, and dry at a constant temperature of 120°C. Take 10 g of dried silicon carbide powder, add it to 100 mL of toluene, raise the temperature to 70 °C and stir for 1 h, add 0.5 g of KH590 dropwise, and stir for 6 h. ℃ oven dry for 12h.
[0044] Take 6 g of polyvinyl alcohol with a degree of polymerization of 500 and a degree of alcoholysis of 88%, add it to 100 mL of water, and dissolve it at 98°C for 6 hours to obtain a 6% aqueous solution of polyvinyl alcohol. After the solution was cooled to room temperature, the pH value of the solution was adjusted to 3 with hydrochloric acid solution.
[0045] Disperse 0.1g of modified silicon carbide in 10mL of water, mix it in 100mL of polyvinyl alcohol aqueous solution, add 0.2g of glutaraldehyde and stir for 3 minutes, inject the mixed solution into a hollow straight g...
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